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/*
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.batik.dom.svg;
import org.apache.batik.parser.DefaultPreserveAspectRatioHandler;
import org.apache.batik.parser.ParseException;
import org.apache.batik.parser.PreserveAspectRatioParser;
import org.apache.batik.util.SVGConstants;
import org.w3c.dom.DOMException;
import org.w3c.dom.svg.SVGPreserveAspectRatio;
/**
* Abstract implementation for SVGPreservAspectRatio
*
* This is the base implementation for SVGPreservAspectRatio
*
* @author Tonny Kohar
* @version $Id: AbstractSVGPreserveAspectRatio.java 1831635 2018-05-15 13:33:47Z ssteiner $
*/
public abstract class AbstractSVGPreserveAspectRatio
implements SVGPreserveAspectRatio,
SVGConstants {
/**
* Strings for the 'align' values.
*/
protected static final String[] ALIGN_VALUES = {
null,
SVG_NONE_VALUE,
SVG_XMINYMIN_VALUE,
SVG_XMIDYMIN_VALUE,
SVG_XMAXYMIN_VALUE,
SVG_XMINYMID_VALUE,
SVG_XMIDYMID_VALUE,
SVG_XMAXYMID_VALUE,
SVG_XMINYMAX_VALUE,
SVG_XMIDYMAX_VALUE,
SVG_XMAXYMAX_VALUE
};
/**
* Strings for the 'meet-or-slice' values.
*/
protected static final String[] MEET_OR_SLICE_VALUES = {
null,
SVG_MEET_VALUE,
SVG_SLICE_VALUE
};
/**
* Returns a string representation of a preserve aspect ratio value
* specified numerically.
* @param align the align value, one of the
* SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_* constants
* @param meetOrSlice the meet-or-slice value, one of the
* SVGPreserveAspectRatio.SVG_MEETORSLICE_* constants
*/
public static String getValueAsString(short align, short meetOrSlice) {
if (align < 1 || align > 10) {
return null;
}
String value = ALIGN_VALUES[align];
if (align == SVG_PRESERVEASPECTRATIO_NONE) {
return value;
}
if (meetOrSlice < 1 || meetOrSlice > 2) {
return null;
}
return value + ' ' + MEET_OR_SLICE_VALUES[meetOrSlice];
}
/**
* align property by default the value is
* SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMID
*/
protected short align =
SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMID;
/**
* meetOrSlice property
* by default the value is SVGPreserveAspectRatio.SVG_MEETORSLICE_MEET;
*/
protected short meetOrSlice = SVGPreserveAspectRatio.SVG_MEETORSLICE_MEET;
/** Creates a new instance of AbstractSVGPreserveAspectRatio */
public AbstractSVGPreserveAspectRatio() {
}
public short getAlign() {
return this.align;
}
public short getMeetOrSlice() {
return this.meetOrSlice;
}
public void setAlign(short align) {
this.align = align;
setAttributeValue(getValueAsString());
}
public void setMeetOrSlice(short meetOrSlice) {
this.meetOrSlice = meetOrSlice;
setAttributeValue(getValueAsString());
}
public void reset() {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMID;
meetOrSlice = SVGPreserveAspectRatio.SVG_MEETORSLICE_MEET;
//setAttributeValue(getValueAsString());
}
protected abstract void setAttributeValue(String value)
throws DOMException;
protected abstract DOMException createDOMException(short type, String key,
Object[] args);
protected void setValueAsString(String value) throws DOMException {
PreserveAspectRatioParserHandler ph;
ph = new PreserveAspectRatioParserHandler();
try {
PreserveAspectRatioParser p = new PreserveAspectRatioParser();
p.setPreserveAspectRatioHandler(ph);
p.parse(value);
align = ph.getAlign();
meetOrSlice = ph.getMeetOrSlice();
} catch (ParseException ex) {
throw createDOMException
(DOMException.INVALID_MODIFICATION_ERR, "preserve.aspect.ratio",
new Object[] { value });
}
}
/**
* Returns the string representation of the preserve aspect ratio value.
*/
public String getValueAsString() {
if (align < 1 || align > 10) {
throw createDOMException
(DOMException.INVALID_MODIFICATION_ERR,
"preserve.aspect.ratio.align",
new Object[] {(int) align});
}
String value = ALIGN_VALUES[align];
if (align == SVG_PRESERVEASPECTRATIO_NONE) {
return value;
}
if (meetOrSlice < 1 || meetOrSlice > 2) {
throw createDOMException
(DOMException.INVALID_MODIFICATION_ERR,
"preserve.aspect.ratio.meet.or.slice",
new Object[] {(int) meetOrSlice});
}
return value + ' ' + MEET_OR_SLICE_VALUES[meetOrSlice];
}
protected static class PreserveAspectRatioParserHandler
extends DefaultPreserveAspectRatioHandler {
public short align =
SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMID;
public short meetOrSlice = SVGPreserveAspectRatio.SVG_MEETORSLICE_MEET;
public short getAlign() {
return align;
}
public short getMeetOrSlice() {
return meetOrSlice;
}
/**
* Invoked when 'none' been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void none() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_NONE;
}
/**
* Invoked when 'xMaxYMax' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMaxYMax() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMAXYMAX;
}
/**
* Invoked when 'xMaxYMid' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMaxYMid() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMAXYMID;
}
/**
* Invoked when 'xMaxYMin' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMaxYMin() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMAXYMIN;
}
/**
* Invoked when 'xMidYMax' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMidYMax() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMAX;
}
/**
* Invoked when 'xMidYMid' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMidYMid() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMID;
}
/**
* Invoked when 'xMidYMin' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMidYMin() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMIN;
}
/**
* Invoked when 'xMinYMax' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMinYMax() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMINYMAX;
}
/**
* Invoked when 'xMinYMid' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMinYMid() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMINYMID;
}
/**
* Invoked when 'xMinYMin' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMinYMin() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMINYMIN;
}
/**
* Invoked when 'meet' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void meet() throws ParseException {
meetOrSlice = SVGPreserveAspectRatio.SVG_MEETORSLICE_MEET;
}
/**
* Invoked when 'slice' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void slice() throws ParseException {
meetOrSlice = SVGPreserveAspectRatio.SVG_MEETORSLICE_SLICE;
}
}
}
